Itô formula for an integro-differential operator without an associated stochastic process

2010 ◽  
Author(s):  
R. Léandre
Keyword(s):  
Stochastic Process ◽  
Differential Operator ◽  
Itô Formula ◽  
Ito Formula

scholarly journals Some Properties of Bifractional Bessel Processes Driven by Bifractional Brownian Motion

2020 ◽  
Vol 2020 ◽  
pp. 1-13
Author(s):  
Xichao Sun ◽  
Rui Guo ◽  
Ming Li
Keyword(s):  
Stochastic Process ◽  
Brownian Motion ◽  
Characterization Theorem ◽  
Bessel Process ◽  
Itô Formula ◽  
Bessel Processes ◽  
Ito Formula ◽  
Bifractional Brownian Motion

Let B = B t 1 , … , B t d t ≥ 0 be a d -dimensional bifractional Brownian motion and R t = B t 1 2 + ⋯ + B t d 2 be the bifractional Bessel process with the index 2 HK ≥ 1 . The Itô formula for the bifractional Brownian motion leads to the equation R t = ∑ i = 1 d ∫ 0 t B s i / R s d B s i + HK d − 1 ∫ 0 t s 2 HK − 1 / R s d s . In the Brownian motion case K = 1 and H = 1 / 2 , X t ≔ ∑ i = 1 d ∫ 0 t B s i / R s d B s i ,   d ≥ 1 is a Brownian motion by Lévy’s characterization theorem. In this paper, we prove that process X t is not a bifractional Brownian motion unless K = 1 and H = 1 / 2 . We also study some other properties and their application of this stochastic process.

scholarly journals A generalization of the Itô formula

2002 ◽  
Vol 31 (8) ◽  
pp. 477-496
Author(s):  
Said Ngobi
Keyword(s):  
Sobolev Space ◽  
White Noise ◽  
Itô Formula ◽  
Ito Formula ◽  
Integrable Functions ◽  
Square Integrable Functions ◽  
White Noise Space

The classical Itô formula is generalized to some anticipating processes. The processes we consider are in a Sobolev space which is a subset of the space of square integrable functions over a white noise space. The proof of the result uses white noise techniques.

An Ito formula for domain-valued processes driven by stochastic flows

2002 ◽  
Vol 124 (1) ◽  
pp. 73-99 ◽  
Author(s):  
Kimberly Kinateder ◽  
Patrick McDonald
Keyword(s):  
Stochastic Flows ◽  
Itô Formula ◽  
Ito Formula

The Ito Formula

1983 ◽  
pp. 85-103
Author(s):  
K. L. Chung ◽  
R. J. Williams
Keyword(s):  
Itô Formula ◽  
Ito Formula

scholarly journals Itô Formula for Free Stochastic Integrals

2002 ◽  
Vol 188 (1) ◽  
pp. 292-315 ◽  
Author(s):  
Michael Anshelevich
Keyword(s):  
Stochastic Integrals ◽  
Itô Formula ◽  
Ito Formula

A remark on the proof of Itô's formula for C2 functions of continuous semimartingales

1992 ◽  
Vol 29 (01) ◽  
pp. 216-221
Author(s):  
Wilfrid S. Kendall
Keyword(s):  
Fundamental Theorem ◽  
Short Note ◽  
Stochastic Calculus ◽  
Itô’S Formula ◽  
Itô Formula ◽  
Ito Formula ◽  
Multivariate Case ◽  
Itô's Formula ◽  
Ito’S Formula ◽  
Ito's Formula

The Itô formula is the fundamental theorem of stochastic calculus. This short note presents a new proof of Itô's formula for the case of continuous semimartingales. The new proof is more geometric than previous approaches, and has the particular advantage of generalizing immediately to the multivariate case without extra notational complexity.

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